Re: [PATCH 0/4] arm64: dts: qcom: x1e80100: Enable bwmon and fastrpc support

[Sibi Sankar]

On 6/6/24 16:00, Konrad Dybcio wrote:
> On 4.06.2024 3:11 AM, Sibi Sankar wrote:
> > This patch series enables bwmon and fastrpc support on X1E80100 SoCs.
> >
> > This series applies on:
> > next-20240603 + https://lore.kernel.org/lkml/20240603205859.2212225-1-quic_sibis@xxxxxxxxxxx/
>
> Going back to [1], is memlat-over-scmi not enough to give us good numbers
> without OS intervention? Does probing bwmon and making some decisions in
> Linux actually help here?

Memlat and bwmon are meant to cover to different use cases. Though
they have a big overlap on when they get triggered bwmon is specifically
meant to address cases where band-width aggregation is required (meaning
if other peripherals already have a avg bw vote on active LLCC/DDR, the
vote from bwmon would be an additional request on top of that). However
to make use of this we should vote for avg-kbps in addition to peak from
icc-bwmon driver which we don't currently do (Shiv was planning on
sending a fix for it).

-Sibi

> Konrad
>
> [1] https://lore.kernel.org/all/20240117173458.2312669-1-quic_sibis@xxxxxxxxxxx/